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From Gifu! Hot Spring Museum Episode 14: Hot Springs in Gifu Prefecture from a Statistical Perspective

As of the end of March 2012 (latest data as of December 2013) by the Ministry of the Environment's Natural Environment Bureau, the number of hot spring sources, hot spring areas, number of sources by temperature, and discharge volume in Gifu Prefecture are as follows.

Table 3: Number of Hot Spring Sources in Gifu Prefecture, etc.

Total number of sources	506
Number of utilized sources	285
Number of unused sources	211
Number of hot spring areas	65
Number of sources by temperature
Below 25℃	152
25℃ to below 42℃	177
42℃ and above	172
Steam gas	4
Discharge volume (liters/minute)	75,367

* The number of hot spring areas is calculated based on locations with accommodation facilities.
* The "source" used in the Ministry of the Environment's statistics corresponds to the "spring source" used in the text.
* According to the status of hot spring use by prefecture (Ministry of the Environment's Natural Environment Bureau 2013)

The total number of spring sources in Gifu Prefecture is 506 according to the Ministry of the Environment's statistics as of 2013. This number ranks 14th nationwide. It includes not only naturally occurring hot springs but also those obtained through drilling.
The number of hot spring areas is calculated based on locations with accommodation facilities. There are also many day-use hot spring facilities in the prefecture, so if you include such facilities, the number of places called "hot springs" rises to nearly 100.
The discharge volume of hot springs is 75,367 liters per minute, which means that nearly 400 drums of hot springs are gushing out every minute throughout Gifu Prefecture.
There are four spring sources in Gifu Prefecture that discharge steam gas. In places like Shirakawa Village's Oshirakawa Onsen and Takayama City's Shin-Hotaka Onsen Nakaodistrict, hot springs are created by passing water through high-temperature steam.